CVE-2026-58012
A flaw was found in GLib. A buffer over-read can occur in the g_regex_replace function when used with the `G_REGEX_RAW` compile flag and case-change replacement escapes because the string_append function processes matched substrings using UTF-8 functions that assume valid UTF-8 input, even when the string is treated as raw bytes. This vulnerability can cause a minor information disclosure of 1-5 bytes and a denial of service when the buffer over-read crosses a page boundary.
- Published Jun 30, 2026
- CVSS 8.2 high
- 0.9% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Affected software
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